Bump System.IdentityModel.Tokens.Jwt and Microsoft.IdentityModel.Tokens

Bumps [System.IdentityModel.Tokens.Jwt](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet) and [Microsoft.IdentityModel.Tokens](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet). These dependencies needed to be updated together.

Updates `System.IdentityModel.Tokens.Jwt` from 6.25.1 to 8.1.0
- [Release notes](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases)
- [Changelog](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/blob/dev/CHANGELOG.md)
- [Commits](AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet@6.25.1...8.1.0)

Updates `Microsoft.IdentityModel.Tokens` from 8.0.1 to 8.1.0
- [Release notes](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases)
- [Changelog](https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/blob/dev/CHANGELOG.md)
- [Commits](AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet@8.0.1...8.1.0)

---
updated-dependencies:
- dependency-name: System.IdentityModel.Tokens.Jwt
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: Microsoft.IdentityModel.Tokens
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

src/Hyperledger.Aries/Hyperledger.Aries.csproj

@@ -20,7 +20,7 @@
         <PackageReference Include="Portable.BouncyCastle" Version="1.9.0" />
         <PackageReference Include="Stateless" Version="$(StatelessVersion)" />
         <PackageReference Include="System.Collections.Immutable" Version="1.7.1" />
-        <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="6.25.1" />
+        <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="8.1.0" />
         <PackageReference Include="System.Reactive.Linq" Version="$(SystemReactiveLinqVersion)" />
     </ItemGroup>
     <ItemGroup>